Truck-side-frame arrangement



I. A. LAMONT.

TRUCK SIDE FRAME ARRANGEMENT.

APPLICATION FILED SEPT- 20' I920- Patented May 10, 1921.

,IIIIIIII I I14! llllllI JOHN A. LAMONT, OF CHICAGO, ILLINOIS, ASSIGNORT AMERICAN STEEL FOUNDRIES, OF CHICAGO, ILLINOIS, A CORPORATION OF NEWJERSEY.

TRUCK-SIDE-FRAME ARRANGEMENT.

Specification of Letters Patent.

Application filed'September 20, 1920. Serial No. 411,604.

- oago, in the countyof Cook and State of Illinois, have inventedcertain new and useful Improvements in Truck-Side-Frame Arrangements, ofwhich the following is a specification. I

This invention relates to a railway truck side frame arrangement.

One object of the lnvention is to provide a flexible side frame in whichthe articulated parts cooperate efiiciently and are connected 7 in asimple, reliable and efficient manner.

Another object is to provide a side frame having portions whichcooperate in a simple and novel manner with associated journal boxes andbolster.

Another object is to provide an articulated truck side frame adapted tomeet the various requirements under service conditions.

These and other objects are accomplished by means of the arrangementdisclosed on the accompanying sheet of drawings, in

which- Figure 1 is a side elevation of my truck side frame;

Fig. 2 is a top plan view-of the same; Figs. 3, 4, 5, 6 and 7 aresectional views taken, respectively, in the planes of lines 3.-3, 4-4,55, 66 and 7--7 of Fig. 1;

Fig. 8 is a side elevation of the pivotal connecting member between theside frame members; and

Fig. 9 is a top plan view of the same. The various novel features of myinvention will be apparent from the following description and drawingsand Will be particularly pointed out in the appended claims.

This articulated truck side frame includes what I choose to call a rigidside frame member 12 shown in detail in Figs. 8 and 9.

This connecting member 12 has a downwardly extending pivot portion 13which is pivotally mounted in a downwardly extending dowel member 14formed integrally with the rigid frame member 10, said connecting memberbeing pivoted to the side frame member 10 on a vertical axis to providea relative lateral swinging movement between the side frame members 10and 11. The inner end of the flexible side frame member 11 terminates inthe rounded pivotal portion 141 formed between the side walls of saidframe memberf The lower wall .of said side frame member adjacent therounded portion 14 is provided with an opening 15 registering with agroove 16 formed inthe rounded end portion 14. The opening 15 receives avertically extending projection 17 formed on the connecting member 12,said projection 17 being continuous with a curved central rib 18 whichoccupies the groove 16 and cooperates with the curved portion 14 forpermitting avertical relative movement of the side frame members 10 and11 about a horizontal axis, which is very advantageous in operating overswitch-backs having vertical curves ranging from 2 degrees to 7 degrees.The side walls 19 of the rounded end ortion 14 of the side frame member11 rlde in the grooves 20 in the connecting member 12,

said grooves being on opposite sides of the centralrib 18, therebyguiding the relative vertical movements of the side frame members 10 and11. The fixed side frame member 10 is provided with a supporting andguiding portion 21 for the connecting member 12, the circular ribs 22 ofwhich slidably engage the guiding and supporting portion 21. By means ofthis connecting member and its cooperative connection with the rigidside frame member 10 and flexible side frame member 11, relativevertical and horizontal movements are permitted between said side framemembers to readily make curves in the tracks in a plurality ofdirections, such, for instance, as those ordinarily encountered inrounding a curve and those encountered in change of inclination of thetrack, especially where an inclination is quite abrupt, such, forexample, in the use of vertical curved tracks on switch-backs.

Normally the side frame members 10 and 11 are locked against separationby a bolt 23 Patented Mayra rear.

extending between the side walls of the fixed side frame member 10 anddirectly over and in engagement with an ear portion 24: on the inner endof the flexible side frame member 11. The locking bolt 23 finds useparticularly in holding the side frame members together in the eventthat the cars are turned over.

Mention has been made heretofore about one of the dowel members 14 onthe rigid frame member 10. This same frame member is provided with anassociateddownwardly extending integrally formed dowel member 25, saidtwo dowel members 14.- and 25 in assembled position passing into pocketsin journal boxes (not shown) for forming a connection therebetween toprevent lateral displacement of one with respect to the other. Thisrigid frame member also has similar downwardly extending dowel members26 and 27 for one end journal box, and the flexible side frame member 11also is provided with similar dowel members 28 and 29 to cooperate withan end journal box, said journal box not being shown. The side framemembers intermediate the dowel pins are provided with upwardly extendingrecesses 30, 31 and 32 which act as clearance spaces for the receptionof ribs on the associated journal boxes in the event that the sideframes are caused to yieldably approach journal boxes when the springsare compressed.

These side frame members are provided with bolster openings 33 and 34,which receive arms 35 and 36 of a bolster. Preferably each of thebolster arms is seated in a bolster pivot member 37 having a verticallydepending projection 38 pivoted in a vertical opening 39 in the sideframe to permit a given amount of pivotal action of said bolster pivotmembers 37,.and accordingly a certain amount of relativemotion betweenthe truck side frame members and the bolster, particularly a relativetransverse movement occasioned in rounding a curve.

There may be various modifications of the invention and it is myintention to cover all such modifications which do not involve adeparture from the spirit and scope of the following claims.

I claim:

1. A railway truck side frame having a plurality oftelescopically-arranged articulated parts connected to permit relativevertical and horizontal movements.

2. A railway truck side frame having a plurality-oftelescopically-arranged articu lated parts connected to permit relativemovements in a plurality of directions.

3. A railway truck side frame having a plurality of frame members and aconnecting member between said frame members whereby the latter may haverelative movements in a plurality of directions,

4. A railway truck side frame having a plurality of frame members and aconnecting member between said frame members whereby the latter may haverelative vertical and horizontal movements.

5. A railway truck side frame having a plurality oftelescopically-arranged articulated parts connected to permit relativevertical and horizontal movements, and means normally locking said partsagainst separation.

6. A railway truck side frame having a plurality of articulated parts,and means additional to the articulation normally locking said partsagainst separation.

7. A railway truck side frame having a plurality of frame membersmovably connected with respect to each other, said members each having aplurality of projections to be received by openings in associatedjournal boxes to limit relative lateral movement between such journalboxes and side frame members.

8. A railway truck side frame having a plurality of side frame membersmovably connected with respect to each other, dowel members carried byone of said members to cooperate with a plurality of journal boxes, anddowel members carried by another of said side frame members forcooperating with another journal box.

9. A railway truck side frame having a plurality of side frame membersmovably connected with respect to each other, dowel members carried byone of said members to co'iiperate with a plurality of journal boxes,and dowel members carried by another of said side frame members forcooperating with another journal box, said side frame membershavingrecesses intermediate said dowel members for the reception of portionson associated journal boxes.

10. A railway truck side frame having a plurality of frame membersconnected to each other for relative movement and having bolsteropenings and bolster receiving members pivotally mounted in said sideframes within said bolster openings.

11. A truck side frame having a bolster opening and a bolster receivingmember pivotally mounted in said side frame memher at said bolsteropening.

12. A truck side frame and a bolster receiving member pivotallyconnected in said side frame.

13. A truck side frame and a bolster receiving member pivotally mountedwith respect to said side frame.

Signed at Chicago, Illinois, this 10th day of September, 1920.

JOHN A. LAMONT.

